He appeared for a mention on charges unrelated to the January Bourke St attack, which left six dead and dozens injured.

Gargasoulas rolled his eyes at one point during the short proceeding.

His barrister Tass Antos successfully sought an adjournment of the unrelated charges, pending an expert psychiatric report that could lead to his client mounting a defence of mental impairment or unfitness to plead on all his charges, including the Bourke St case.

The prosecution didn't oppose the adjournment request.

Gargasoulas remained silent throughout the hearing, unlike his recent court videolink appearance in May, when he went on a bizarre rant, blaming "the Illuminati" and claiming to have been set up because he holds the key to the Freemasons' treasure.